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Power amplifier linearization methods and apparatus using predistortion in the frequency domain

  • US 7,336,716 B2
  • Filed: 06/30/2004
  • Issued: 02/26/2008
  • Est. Priority Date: 06/30/2004
  • Status: Active Grant
First Claim
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1. A method comprising:

  • predistorting an input signal to a power amplifier generating a non-linear output, the predistortion being performed in the frequency domain by modifying frequency-domain symbols used to modulate individual sub-carriers of an orthogonal frequency division multiplexed signal;

    wherein modifying the frequency-domain symbols comprises replacing one or more frequency-domain symbols with frequency-domain predistortion symbols.

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